Bug name: /spreadplayers command doesn't teleport players out of minecarts.
Version: 13w23a/13w23b
Details: Mojang recently updated the /tp command work with minecarts. The /spreadplayers command doesn't work with minecarts though
Linked issues
Comments
This bug is annoying.
Confirmed for 1.6.2.
Confirmed for 1.7.1
Confirmed for 1.7.4 and 14w04b.
Confirmed in 14w11b.
Workaround, first do:
/tp player ~ ~ ~
... which dumps them out of the minecart or boat, then do /spreadplayers.

Confirmed for 14w30c

Please update affected versions.

Is this still a concern in the current Minecraft version 1.8.1 Prerelease 3 / Launcher version 1.5.3 or later? If so, please update the affected versions in order to best aid Mojang ensuring bugs are still valid in the latest releases/pre-releases.

Yes it is.

Is this still an issue in the current Minecraft Snapshot 15w47c or later? If so, please update the affected versions in order to best aid Mojang ensuring bugs are still valid in the latest releases/pre-releases.
resolved as 15w47c, teleport player and minecart at the same time
Fixed somewhere between 15w47c and 1.8.1-pre3.
Confirmed.